How many MRSA cases were there in the US in 2005?

94,360.

A study on MRSA entitled “Invasive Methicillin-Resistant Staphylococcus aureus Infections in the United States”, published in October 2007 in the Journal of the American Medical Association, estimates there were 94,360 MRSA cases in the US in 2005, and 18,650 MRSA deaths. MRSA incidence rates are estimated to be about 31.8 cases per 100,000 population. People aged 50 years and over are the most affected population group.